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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: insufficient range on bias pot scott 299b posted by FenderLover on July 13, 2016 at 00:07:57:
Hi: The only info I found online about this is cryptic copy of scott instructions which seem to require total of 55ma for a pair on a given channel. These are brand new tubes which test at 100% on a eico 667. One thing I do not know is if reading is to be taken with no music. It does spike up much higher with music turned up. To answer other reply; the image does not reflect true colors. Those in fact are the old JJ tubes which were not red plating or blue aura-ing. Any appearance of same is illusory. And the negative supply is quite adequate; it has been replaced with all new parts. There is plenty of negative supply; the problem is that the numbers do not add up. Thank you.
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Follow Ups
- RE: insufficient range on bias pot scott 299b - thermionic emitter 10:38:45 07/13/16 (1)
- RE: insufficient range on bias pot scott 299b - Palustris 12:54:22 07/13/16 (0)
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